Home / 10,936.20-16,361.10-9,491.40

Finding the Fourth Proportional to 10,936.20, 16,361.10 and 9,491.40

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Solution

The fourth proportional to 10,936.20, 16,361.10 and 9,491.40 is: 14,199.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,936.20 : 16,361.10 = 9,491.40 : x
  2. Step 2: Convert to fraction form
    10,936.20/16,361.10 = 9,491.40/x
  3. Step 3: Cross multiply
    10,936.20x = 16,361.10 × 9,491.40
  4. Step 4: Simplify right side
    10,936.20x = 155,289,744.54
  5. Step 5: Solve for x
    x = 155,289,744.54/10,936.20
  6. Step 6: Final answer
    x = 14,199.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.